Follow these instructions:
It should look like this in the end:
entrypoint = "main.py"
modules = ["python-3.10:v18-20230807-322e88b"]
hidden = [".pythonlibs"]
run = "python3 main.py"
[nix]
channel = "stable-23_05"
[deployment]
run = ["sh", "-c", "run command"]
deploymentTarget = "cloudrun"